Don't put too much faith in the 1953 date.
The buttons on the cap look well polished (wartime).
Someone else has challenged the badge and the hole placement.
Re. hole placement...sometimes ORs were commissioned....if they had a nice cap they might just re-badge it. (RAF officers routinely wore OR BD for working dress around the station and even flying.)
Conclusion: I'd have to handle the cap to give you a verdict. Sorry I can't be more helpful.